Merge pull request #21 from An-dz/master

Enabled translation of tooltips & PT translation
to do list update
own functions for pageup, pagedown, end & pos1
pl tooltip strings
German tooltip localization
easy tooltip localization (mentioned in #21 ;) )
French tooltip localization
modern scroll 2.0
fix Google maps/translate & pos1/end in input
modern scroll 2.0
junk
Revert "junk"

This reverts commit 4737e43b9cab1415cc5e5d1a9277d87a7fa96b6a.
modern scroll 2.0
changed version number into 2.1
preferences are immediately restored
added intended version 2.1 changelog
moved complete ui in a single container
support for cleanPages extension
amended v 2.1 changelog
fix megalab.it & clear global namespace